Constanza Morosini

Constanza Morosini (Serbian: Констанца Морозини; 1275–1324) was a Venetian noblewoman, from the aristocratic Morosini family. By marriage, she was the Duchess of Slavonia, and the Queen of Serbia (Serviae Regina). In 1293, she married Serbian prince Stefan Vladislav II, from the Nemanjić dynasty, who was at that time the titular Duke of Slavonia, and later a Serbian king-pretender (twice, in 1316 and 1321) to the Serbian royal throne, and also ruled as the Lord of Syrmia.

She was the granddaughter of Albertino Morosini. Constanza, a Catholic, married Vladislav, an Eastern Orthodox, but kept her faith. It is unknown if Constanza had issue by her spouse.